mouldy

/ˈmoʊldi/

//ˈmoʊldi// adj

"mouldy" is a 6-letter English headword indexed on PlainSpell.

The verdict

“mouldy” is uncommon English (frequency #57,572 among 4,057 “M” headwords), classed as an adjective. The kind of spelling people second-guess.

#57,572
frequency rank, English
4,057
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Covered with mould.

Corpus desk

Index EN-mouldy · mouldy · English

mouldy · rank #57,572 · 0 variants · 0 confusables

  • FREQ-RARE #57,572
  • LEN-LONG 6 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,057
  • PHOTO-FINISH Morrill

Nearest frequency peer: Morrill (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Long-tail ranks near “mouldy”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “mouldy” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for mouldy
PropertyValue
Headwordmouldy
LanguageEnglish
Part of speechAdjective
IPA/ˈmoʊldi/
Letters6
Frequency rank#57,572
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mouldy” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).mouldyfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Morrill” (#57,571), “munger” (#57,573), “Munk” (#57,574). Among 4,057 “M” headwords, “mouldy” is #57,572. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mouldy is uncommon English at frequency #57,572 among 4,057 “M” headwords, classed as anadjective, transcribed /ˈmoʊldi/. Rarity is why readers land here mid-draft. 4 senses are on record.

mouldy doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From mould + -y. The correct English form is mouldy, spelled M-O-U-L-D-Y.

Definition

  1. 1
    Covered with mould.
  2. 2
    Showing signs of neglect; disused.
  3. 3
    Worthless; lousy; rotten.
  4. 4
    Gray-headed, whether from age or hair powder.

Recorded use

Wiktionary examples

These source excerpts show how mouldy appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. 'Go cuddle up to your mouldy old papers,' she shouted at him. 'See how warm they'll keep you.' She slammed the door and made to walk off.
  2. Let him be great, as e'er he will, / He's rotten at the heart's core still; / Yet counsel from his mouldy pate, / Supports the trembling chair of state, / And scatters with unsparing hand, / A thousand miseries o'er the land; […]

Etymology

From mould + -y.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "mouldy"?
"mouldy" is spelled M-O-U-L-D-Y. The IPA pronunciation is /ˈmoʊldi/.
What does "mouldy" mean?
As an adjective, "mouldy" means: Covered with mould.
How do you pronounce "mouldy"?
The IPA (International Phonetic Alphabet) transcription for "mouldy" is /ˈmoʊldi/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "mouldy"?
From mould + -y. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "mouldy", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list